E019
Lochinvar
Ignition Lockout (Exceeded Retry Count)
Display shows E019; unit may lock out after several failed ignition attempts.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Persistent ignition failure, Incorrect gas/air mixture, Dirty burner, Faulty ignition control logic
How to Fix / Troubleshooting
Safety: Turn off gas and power before servicing. Repeated ignition failures can lead to unburned gas accumulation.
Steps:
- 1. Clear lockout: Follow the Lochinvar manual to reset the lockout (often by pressing reset or cycling power). Observe the ignition sequence carefully.
- 2. Review prior faults: Check the fault history for E001/E002 or other related codes and address those root causes (igniter, flame sensor, gas valve, venting).
- 3. Clean burner and electrodes: Remove and clean the burner assembly, igniter, and flame sensor as per manufacturer instructions.
- 4. Professional combustion check: Have a qualified technician perform combustion analysis and adjust gas valve settings if necessary.
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Repair Difficulty
Hard
4/5
Required Part
Ignition Control Board
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